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Contract OI history

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Jan 15, 2027 EXPIRATION

MRK $115.00 Put

MRK270115P00115000

Latest saved OI3,440Oct 23, 2026
Last change+11vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $115.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3,4401,7200 2026-10-02: 3,425 OI2026-10-05: 3,429 OI2026-10-06: 3,434 OI2026-10-07: 3,434 OI2026-10-08: 3,434 OI2026-10-09: 3,435 OI2026-10-13: 3,436 OI2026-10-14: 3,436 OI2026-10-15: 3,432 OI2026-10-16: 3,432 OI2026-10-21: 3,429 OI2026-10-23: 3,440 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

MRK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3,440+11
Oct 21, 20263,429-3
Oct 16, 20263,4320
Oct 15, 20263,432-4
Oct 14, 20263,4360
Oct 13, 20263,436+1
Oct 09, 20263,435+1
Oct 08, 20263,4340
Oct 07, 20263,4340
Oct 06, 20263,434+5
Oct 05, 20263,429+4
Oct 02, 20263,425No prior observation